org.jcsp.lang
Class SharedConnectionServerImpl

java.lang.Object
  org.jcsp.lang.SharedConnectionServerImpl

All Implemented Interfaces:

ConnectionServer, SharedConnectionServer

public class SharedConnectionServerImpl
extends Object
implements SharedConnectionServer

This class does not need to be used by standard JCSP users. It is exposed so that the connection mechanism can be extended for custom connections.

Author:

Quickstone Technologies Limited

Field Summary

Fields inherited from interface org.jcsp.lang.ConnectionServer

FACTORY

Constructor Summary

protected

SharedConnectionServerImpl(AltingChannelInput openIn, AltingChannelInput requestIn, ChannelInput synchIn, SharedChannelOutput synchOut, org.jcsp.lang.ConnectionWithSharedAltingServer parent)

Method Summary

SharedConnectionServer	duplicate() Creates a duplicate copy of the connection end.
void	reply(Object data) Sends some data back to the client after a request has been received but keeps the connection open.
void	reply(Object data, boolean close) Sends some data back to the client after a request has been received.
void	replyAndClose(Object data) Sends some data back to the client and closes the connection.
Object	request() Receives a request from a client.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SharedConnectionServerImpl

protected SharedConnectionServerImpl(AltingChannelInput openIn,
                                     AltingChannelInput requestIn,
                                     ChannelInput synchIn,
                                     SharedChannelOutput synchOut,
                                     org.jcsp.lang.ConnectionWithSharedAltingServer parent)

Method Detail

request

public Object request()

Description copied from interface: ConnectionServer

Receives a request from a client. This will block until the client calls its request(Object) method. Implementations may make this ALTable.

After this method has returned, the server should call one of the reply methods. Performing any external process synchronization between these method calls could be potentially hazardous and could lead to deadlock.

Specified by:

request in interface ConnectionServer

Returns:

the Object sent by the client.

reply

public void reply(Object data)

Description copied from interface: ConnectionServer

Sends some data back to the client after a request has been received but keeps the connection open. After calling this method, the server should call recieve() to receive a further request.

A call to this method is equivalent to a call to reply(Object, boolean) with the boolean set to false.

Specified by:

reply in interface ConnectionServer

Parameters:

data - the data to send to the client.

reply

public void reply(Object data,
                  boolean close)

Description copied from interface: ConnectionServer

Sends some data back to the client after a request has been received. The boolean close parameter indicates whether the connection should be closed after this reply has been sent.

This method should not block.

Specified by:

reply in interface ConnectionServer

Parameters:

data - the data to send back to client.

close - boolean that should be true iff the connection should be dropped after the reply has been sent.

replyAndClose

public void replyAndClose(Object data)

Description copied from interface: ConnectionServer

Sends some data back to the client and closes the connection.

A call to this method is equivalent to a call to reply(Object, boolean) with the boolean set to true.

Specified by:

replyAndClose in interface ConnectionServer

Parameters:

data - the data to send back to client.

duplicate

public SharedConnectionServer duplicate()

Description copied from interface: SharedConnectionServer

Creates a duplicate copy of the connection end.

Specified by:

duplicate in interface SharedConnectionServer

Returns:

the duplicate SharedConnectionServer object.